400023433 has 4 divisors (see below), whose sum is σ = 405994000. Its totient is φ = 394052868.

The previous prime is 400023431. The next prime is 400023461. The reversal of 400023433 is 334320004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400023433 - 2¹ = 400023431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400023433.

It is not an unprimeable number, because it can be changed into a prime (400023431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2985183 + ... + 2985316.

It is an arithmetic number, because the mean of its divisors is an integer number (101498500).

Almost surely, 2^400023433 is an apocalyptic number.

It is an amenable number.

400023433 is a deficient number, since it is larger than the sum of its proper divisors (5970567).

400023433 is an equidigital number, since it uses as much as digits as its factorization.

400023433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5970566.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 400023433 is about 20000.5858164205. The cubic root of 400023433 is about 736.8206874321.

Adding to 400023433 its reverse (334320004), we get a palindrome (734343437).

The spelling of 400023433 in words is "four hundred million, twenty-three thousand, four hundred thirty-three".